Effects of environmental vertical wind shear on Typhoon Matsa (0509)

LI Rui; LI Ben-liang; HU Peng; LIANG Yong-li; LIU Ai-mei

doi:10.3969/j.issn.1001-909X.2014.02.002

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Journal of Marine Sciences ›› 2014, Vol. 32 ›› Issue (2) : 14-22. DOI: 10.3969/j.issn.1001-909X.2014.02.002

Effects of environmental vertical wind shear on Typhoon Matsa (0509)

LI Rui, LI Ben-liang, HU Peng, LIANG Yong-li, LIU Ai-mei

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Abstract

The effects of environmental vertical wind shear (VWS) on the intensity, convection and precipitation asymmetries in Typhoon Matsa (0509) were analyzed based on the satellite observation data from various sources and NCEP/NCAR reanalysis wind. The results show that before and after Matsa's landfall, there is very close relationship between the VWS and Matsa's intensity, but the VWS is not a sole factor for Matsa's intensity variability. The VWS has a great impact on the asymmetric distribution of Matsa's convection and precipitation before and after its landfall. Heavy convection and rainfall generally occurr downshear to downshear-left of the VWS vector, showing a strong wavenumber-1 asymmetry.

Key words

Typhoon Matsa / intensity / convection and precipitation structures / environmental vertical wind shear

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LI Rui, LI Ben-liang, HU Peng, LIANG Yong-li, LIU Ai-mei. Effects of environmental vertical wind shear on Typhoon Matsa (0509)[J]. Journal of Marine Sciences. 2014, 32(2): 14-22 https://doi.org/10.3969/j.issn.1001-909X.2014.02.002

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